Studies is a series of pencil drawings realized by Leon Aubert (1824-1906) The white paper is slightly damaged on the bottom edge. There are some sketches on the back of the paper, and also the signature of the artist. This piece is attributed to the mentioned designer/maker. It has no attribution mark and no official proof of authenticity, however it is well documented in design history. I take full responsibility for any authenticity issues arising from misattribution